diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1 +1,14 @@
-# rtl_ameba_gcc_sample
\ No newline at end of file
+# rtl_ameba_gcc_sample
+
+* Realtek ameba gcc build environment
+
+
+* os : linux
+* toolchan : arm-eabi-none-gcc
+
+
+* usage:
+* make
+* genrate makebin/ram_all.bin
+
+* This example is based on https://github.com/neojou/arm-gcc-blink-example